cvt.c (convert_to_void): Preserve TREE_SIDE_EFFECTS on COMPOUND_EXPRs.

	* cvt.c (convert_to_void): Preserve TREE_SIDE_EFFECTS
	on COMPOUND_EXPRs.

From-SVN: r44956

gcc/cp/ChangeLog

+2001-08-16  Mark Mitchell  <mark@codesourcery.com>
+
+	* cvt.c (convert_to_void): Preserve TREE_SIDE_EFFECTS
+	on COMPOUND_EXPRs.
+
 2001-08-14  Richard Henderson  <rth@redhat.com>
 
 	* class.c, cp-tree.h (build_vfn_ref): Remove.

gcc/cp/cvt.c

@@ -950,8 +950,13 @@ convert_to_void (expr, implicit)
         tree new_op1 = convert_to_void (op1, implicit);
         
         if (new_op1 != op1)
-          expr = build (COMPOUND_EXPR, TREE_TYPE (new_op1),
-                        TREE_OPERAND (expr, 0), new_op1);
+	  {
+	    tree t = build (COMPOUND_EXPR, TREE_TYPE (new_op1),
+			    TREE_OPERAND (expr, 0), new_op1);
+	    TREE_SIDE_EFFECTS (t) = TREE_SIDE_EFFECTS (expr);
+	    expr = t;
+	  }
+
         break;
       }